Pixel arrangement structure, display panel and mask assembly

Abstract

A pixel arrangement structure, a display panel and a mask assembly. The pixel arrangement structure includes a plurality of repeat units arranged in an array, each of the repeat units is an N polygon, N≥4 and N is an even number, the repeat unit includes: a first pixel group including at least two first sub-pixels; at least two second pixel groups, each of the second pixel groups includes two second sub-pixels; and at least two third pixel groups, each of the third pixel groups includes two third sub-pixels, the at least two second pixel groups and the at least two third pixel groups are alternately arranged on a peripheral side of the first pixel group.

What is claimed is: 
     
         1 . A pixel arrangement structure comprising a plurality of repeat units arranged in an array, each of the repeat units being an N polygon, N≥4 and N being an even number, wherein the repeat unit comprises:
 a first pixel group comprising at least two first sub-pixels; 
 at least two second pixel groups, each of the second pixel groups comprising two second sub-pixels; and 
 at least two third pixel groups, each of the third pixel groups comprising two third sub-pixels, the at least two second pixel groups and the at least two third pixel groups being alternately arranged on a peripheral side of the first pixel group. 
 
     
     
         2 . The pixel arrangement structure of  claim 1 , wherein
 in the repeat unit, a ratio of numbers of the first sub-pixels, the second sub-pixels and the third sub-pixels is 1:2:2, the first sub-pixel, the second sub-pixel and the third sub-pixel form a pixel display unit, and the first sub-pixel is shared by adjacent two pixel display units; or   in the repeat unit, the first pixel group comprises two first sub-pixels, and a ratio of the numbers of the first sub-pixels, the second sub-pixels and the third sub-pixels is 1:1:1.   
     
     
         3 . The pixel arrangement structure of  claim 1 , wherein
 N is 6, the repeat unit is a hexagon and comprises the first pixel group, three second pixel groups and three third pixel groups, and the first pixel group comprises three or six first sub-pixels; or   N is 4, the repeat unit is a quadrilateral and comprises the first pixel group, two second pixel groups and two third pixel groups, and the first pixel group comprises two or four first sub-pixels.   
     
     
         4 . The pixel arrangement structure of  claim 3 , wherein the repeat unit comprises at least two diagonals, any one of the diagonals divides the repeat unit into two portions of a same area, and in the repeat unit, at least four second sub-pixels and/or at least four third sub-pixels are arranged at two sides of any one of the diagonals. 
     
     
         5 . The pixel arrangement structure of  claim 4 , wherein the repeat unit is a regular polygon, and at least one of the first pixel group, the second pixel group and the third pixel group is symmetrically arranged about the diagonal. 
     
     
         6 . The pixel arrangement structure of  claim 5 , wherein in the repeat unit, at least four second sub-pixels and at least four third sub-pixels are symmetrically arranged about the diagonals. 
     
     
         7 . The pixel arrangement structure of  claim 4 , wherein the at least two first sub-pixels in the first pixel group are symmetrically arranged about the diagonal. 
     
     
         8 . The pixel arrangement structure of  claim 4 , wherein the second sub-pixels and the third sub-pixels have the same shape and area. 
     
     
         9 . The pixel arrangement structure of  claim 5 , wherein
 the second sub-pixel is a trapezoid and comprises a second upper edge and a second lower edge opposite to each other and a second side edge connecting the second upper edge and the second lower edge, wherein a length of the second upper edge is less than a length of the second lower edge and the second lower edge is located at a side of the second upper edge away from the first sub-pixel, and in the second pixel group, adjacent two second side edges of the two second sub-pixels are parallel.   
     
     
         10 . The pixel arrangement structure of  claim 9 , wherein
 the second sub-pixel is a quadrilateral and adjacent to the third sub-pixel by the second side edge, and the second side edge is parallel to an outer edge of at least one of the third sub-pixels.   
     
     
         11 . The pixel arrangement structure of  claim 10 , wherein the second sub-pixel is a right-angled trapezoid, the second side edge comprises a second right-angled side edge, the second sub-pixel is adjacent to the third sub-pixel by the second right-angled side edge, and the second right-angled side edge is parallel to the outer edge of at least one of the third sub-pixels. 
     
     
         12 . The pixel arrangement structure of  claim 10 , wherein the third sub-pixel is a trapezoid and comprises a third upper edge and a third lower edge opposite to each other and a third side edge connecting the third upper edge and the third lower edge, and a length of the third upper edge is less than a length of the third lower edge. 
     
     
         13 . The pixel arrangement structure of  claim 12 , wherein the third lower edge is located at a side of the third upper edge away from the first sub-pixel, in the third pixel group, adjacent two third side edges of the two third sub-pixels are parallel, and for the second sub-pixel and the third sub-pixel that are adjacent, the second side edge and the third side edge are adjacent and parallel. 
     
     
         14 . The pixel arrangement structure of  claim 12 , wherein the third sub-pixel is a right-angled trapezoid, the second side edge comprises a second right-angled side edge, the third side edge comprises a third right-angled side edge, and in the repeat unit, the second right-angled side edge and the third right-angled side edge that are adjacent are parallel. 
     
     
         15 . The pixel arrangement structure of  claim 12 , wherein the first sub-pixel is a polygonal, and the second upper edge and the third upper edge of the second sub-pixel and the third sub-pixel that are adjacent are arranged adjacent to a same outer edge of the first sub-pixel. 
     
     
         16 . The pixel arrangement structure of  claim 1 , wherein the repeat units are arranged in the array along a first direction and a second direction; and
 two columns of the repeat units that are adjacent along the first direction are symmetrically distributed about an axis extending along the second direction.   
     
     
         17 . The pixel arrangement structure of  claim 16 , wherein two rows of the repeat units that are adjacent along the second direction are symmetrically distributed about an axis extending along the first direction. 
     
     
         18 . A display panel comprising the pixel arrangement structure of  claim 1 . 
     
     
         19 . A mask assembly to be applied for evaporation of the pixel arrangement structure of  claim 1 , the mask assembly comprising:
 a first mask plate configured for evaporation of the first sub-pixels and comprising a first evaporation opening adapted to an outer contour of a plurality of the first sub-pixels that are adjacent in the pixel arrangement structure;   a second mask plate configured for evaporation of the second sub-pixels and comprising a second evaporation opening adapted to an outer contour of a plurality of the second sub-pixels that are adjacent in the pixel arrangement structure; and   a third mask plate configured for evaporation of the third sub-pixels and comprising a third vaporization opening adapted to an outer contour of a plurality of the third sub-pixels that are adjacent in the pixel arrangement structure.